class_name SceneManager extends Node2D

@onready var triggers: Node2D = $"../Triggers"
@onready var game: GameController = $".."
@onready var player: Player = $"../Player"

var bullet = preload("res://scenes/bullet.tscn")

var bulletArray:Array[Bullet] = []
var totalAllowedBullets:int = 7

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	buildLevel()
	game.teleportSignal.connect(teleport)	
	game.destroySignal.connect(destroy)
	player.shootSignal.connect(makeBullet)

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	pass

func buildLevel()->void:
	if triggers:
		for obj in triggers.get_children():
			if obj is Trigger:
				if not obj.areaTriggered.is_connected(game._on_trigger):
					obj.areaTriggered.connect(game._on_trigger)
					
func teleport(body, _bodyposition=null)->void:
	if body is Crate:
		var viewport_size = get_viewport().get_visible_rect().size
		var random_x = randf_range(0, viewport_size.x)
		var random_y = randf_range(0, viewport_size.y)
		var newPosition = Vector2(random_x, random_y)
		body.teleport_to(newPosition)

func bulletFactory()->Bullet:
	var myBullet:Bullet
	#how many bullets have been produced?
	if bulletArray.size() <= totalAllowedBullets:
		#make a new bullet
		myBullet = bullet.instantiate()
		add_sibling(myBullet)
		if not myBullet.bulletDamageSignal.is_connected(game._on_bullet_hit):
			myBullet.bulletDamageSignal.connect(game._on_bullet_hit)
	else:
		myBullet = bulletArray.pop_back()
		
	bulletArray.push_front(myBullet)
	return myBullet
func makeBullet(spawnPosition, speed)->void:
	print("make bullet")
	var myBullet:Bullet = bulletFactory()
	myBullet.transform = spawnPosition
	myBullet.setSpeed(speed)
	myBullet.set_process(true)

func stash(bullet:Bullet)->void:
	#hide it off-screen, remove from game loop
	var stashPosition:Vector2 = Vector2(-100,-100)
	bullet.position = stashPosition
	bullet.setSpeed(0)
	bullet.set_process(false)
	
func destroy(body)->void:
	if body is Crate:
		body.queue_free()
	if body is Bullet:
		#stash the bullet - save memory!
		stash(body)